projection screen apparatus, projection apparatus, and projection method

Patent metadata

Field	Value
Publication number	US-2016209669-A1
Application number	US-201614996486-A
Country	US
Kind code	A1
Filing date	Jan 15, 2016
Priority date	Jan 21, 2015
Publication date	Jul 21, 2016
Grant date	—

Abstract

A projection screen apparatus has: a display panel having an external panel surface and an internal panel surface; an actuator device by way of which an oscillating motion is impartable to at least a part of the projection screen apparatus; a diffuser screen, disposed adjacently to the internal panel surface, to which the oscillating motion with respect to the display panel is imparted by way of the actuator device; and a gap between the internal panel surface of the display panel and an inner surface of the diffuser screen directed toward the internal panel surface being filled at least in part with at least one viscoelastic filler material.

First claim

What is claimed is:

1 . A projection screen apparatus, comprising:
a display panel having an external panel surface and an internal panel surface; an actuator device imparting an oscillating motion to at least a part of the projection screen apparatus; a diffuser screen disposed adjacently to the internal panel surface, to which diffuser screen the oscillating motion with respect to the display panel is imparted by the actuator device; and a gap between the internal panel surface of the display panel and an inner surface of the diffuser screen directed toward the internal panel surface, the gap being filled at least in part with at least one viscoelastic filler material.

2 . The projection screen apparatus as recited in claim 1 , the at least one viscoelastic filler material being transparent to wavelengths in the visible range.

3 . The projection screen apparatus as recited in claim 2 , the at least one viscoelastic filler material having an optical refractive index of between 1.2 and 1.6 for wavelengths in the visible range.

4 . The projection screen apparatus as recited in claim 3 , the at least one viscoelastic filler material having an optical refractive index of between 1.3 and 1.5 for wavelengths in the visible range.

5 . The projection screen apparatus as recited in claim 2 , wherein the at least one viscoelastic filler material includes at least one of an adhesive, a silicone gel, and acrylic.

6 . The projection screen apparatus as recited in claim 2 , wherein:
a rotation around a rotation axis intersects the diffuser screen; and the display panel is imparted to the diffuser screen by the actuator device as the oscillating motion with respect to the display panel.

7 . The projection screen apparatus as recited in claim 6 , the diffuser screen being linked via at least one crankshaft to an electric motor constituting at least part of the actuator device, in such a way that the rotation with respect to the display panel around the rotation axis intersects the diffuser screen and the display panel is imparted to the diffuser screen by operation of the electric motor.

8 . The projection screen apparatus as recited in claim 2 , the oscillating motion with respect to the display panel being imparted to the diffuser screen by the actuator device in such a way that a distance between the diffuser screen and the display panel is periodically varied.

9 . The projection screen apparatus as recited in claim 8 , the display panel having at least one rounded external panel surface.

10 . A projection system, comprising:
a projection screen apparatus having:
a display panel having an external panel surface and an internal panel surface;
an actuator device imparting an oscillating motion to at least a part of the projection screen apparatus;
a diffuser screen disposed adjacently to the internal panel surface, to which diffuser screen the oscillating motion with respect to the display panel is imparted by the actuator device; and
a gap between the internal panel surface of the display panel and an inner surface of the diffuser screen directed toward the internal panel surface, the gap being filled at least in part with at least one viscoelastic filler material; and
a light-emitting device by which at least one light beam is projected through the diffuser screen onto the display panel.

11 . A projection method, comprising:
projecting an image onto a display panel; and at least at times during projection of the image onto the display panel, imparting to a diffuser screen an oscillating motion with respect to the display panel, through which diffuser screen at least one light beam of the image projected onto the display panel is transmitted, and which diffuser screen is spaced away from the display panel by a gap filled at least in part with at least one viscoelastic filler material.

Assignees

• Bosch Gmbh Robert

Inventors

• Digel Tobias
• Lubenow Cedric
• Fischer Frank
• Edel Martin

Classifications

• G02B5/0278

  used in transmission · CPC title

• G02B27/48 Primary

  Laser speckle optics · CPC title

• G03B21/562 Primary

  Screens moving during projection (G03B21/58 - G03B21/62 take precedence) · CPC title

• G03B21/608

  Fluid screens · CPC title